And if Canon can do that, can it finally deliver a FF sensor that is also class leading? By class leading, I'm referring to noise control and DR
Canon already has a class-leading sensor, it's in the 6d: nearly zero (esp. vertical) banding (better than 1dx @iso100) means almost the full theoretical dr is actually usable. It has good dr @base iso (boosted +1/3ev by ML and =15ev with dual_iso) and superior dynamic range at high iso: http://sensorgen.info/CanonEOS_6D.html
This is not true. The 6D does NOT have the "full theoretical DR", not even close. The 6D has the same problem as every other Canon camera: A flattened DR curve at low ISO. Canon's DR tops out at around 12 stops of DR. Their sensors are more than capable of more than that, according to Roger Clark the sensor itself is actually probably capable of a little over 15 stops of DR natively (in analog space, before digitization), however the ADC bit depth limits it to 14, and downstream electronics (namely the ADC) introduce so much noise that it flattens the curve, rather than leaving it in it's linear state. It doesn't matter if the 6D ISO 100 noise doesn't have banding...the problem is that it still has a ton of noise. It has 26.8e- worth of read noise, which while less than the 1DX's 38.2e-, it also has a lower FWC, so it's dynamic range is roughly the same.
The problem isn't the sensor. Canon's sensors are very good. Canon's problem is their high frequency off-die ADC units housed in the DIGIC chips. They are just plain noisy.
Roger Clark has evaluated a lot of Canon sensors. His work finds the lowest noise level in the sensor itself, which would be intrinsic sensor noise, devoid of actual read noise. That's dark current noise in the sensor, along with whatever noise the per-pixel amplifiers might introduce. In Canon sensors, that noise level is around 2e-. In the case of the 6D, the sensor's analog dynamic range would be 20log(76606/2) dB, or 91.65 dB, which in terms of stops is 15.27. In the case of the 1D X, which also has ~2e- intrinsic sensor noise, the maximum possible dynamic range would be 93.1 dB or 15.52 stops. These levels aren't realizable due to the amount of read noise at ISO 100. If Canon can get their read noise under control, and get their ISO 100 noise levels down to 3-4e-, their dynamic range would be ~14-14.5 stops. Throw in a little bit of quantization error and PRNU and a 14-bit ADC, and Canon's DR jumps up to the level of Sony Exmors. Throw in a 16-bit ADC, and Canon should be able to achieve 14.5 stops of DR pretty easily. If they can lower their read noise levels even more, they could achieve well more than 15 stops of DR.
Their SENSORS are capable. The rest of their electronics are not. Canon's biggest problem is their approach of offloading the ADC into the DIGIC chip, and running them at very high frequency. Plus, their use of a downstream secondary amplifier doesn't help, but that only kicks in at higher ISO as far as I am aware.